True CS 1.0 Owner's Manual page 33

HRC Safety
chapter four: HRC
Two users wearing the same kind of transmitter at the same time
Technical
and in close proximity may cause false heart rate display readings.
Tips
Use a Polar® brand standard transmitter or compatible transmitter.
TRUE's HRC is patented under USPTO #5,462,504.
If your heart rate exceeds your target by 12 beats, there will be a
HRC Safety
Features 30% MET reduction in workload to reduce your heart rate.
If your heart rate exceeds your target by 20 beats, the unit will
automatically shut off as a precautionary measure. (Be cautious
when selecting your target heart rate so the 20 beat variance
will not exceed your maximum heart rate as determined by your
physician).
31
CS1.0 Owner's Guide